Sole-trimming machine.



G. JULIAN.

SOLE TRIMMING MACHHIE.

APPLICATION FILED NOV. 5. 19!? Patented Aug. 13, 1918.

UNIT STATES PATENT OFFICE.

GIDEON JULIAN, or BEVERLY, MASSACHUSETTS, AsSIGNoE, BY MEsNE ASSIGNMENTS, T0 UNITED sHoE MAoHINEEv CORPORATION, 0E PATERSON, NEW JERSEY, A con- P ORATION OF NEW JERSEY.

SOLE-TRIMMING MACHINE.

Specification of Letters Patent. Patented Aug. 13, 1918.

Application filed November 5, I917. Serial Il'o. 200,291.

To all whom it may concern:

Be it known that I, GmEoN JULIAN, a citizen 'ofthe United States, residing at Beverly, in the county of Essex and'State "of Massachusetts, have] invented certain new and useful Improvements in Sole-Trinnning Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, suchfas will enable others skilled in the art to which it appertains to make and use the same. a

This invention, relates to sole trimming machines and more particularly to that class of sole trimming machines for performing what is known as'the sole rounding operation on block soles before attachment to the shoe. For'pur'poses ofillustration the improvement, forming the subject matter'of the present application, is shown as applied to that type of sole rounding machine shown and described in Letters Patent of the United States to G. 'L. Allen, No. 1,994, and to B. F. Mayo, No. 882,009, both dated March 17, 1908, known as the Planet sole rounder. 1

'Mac'hines oftlie'Planet sole rounder type may be used for. rounding or trimming either leather or rubber soles.v In leather sole work'the rounding knife is so formed as to produce a sole edge lying in afplane at right; anglesto'th'e solefface's. In rubber sole work the 'roundingknife'is so formed as to produce a beveled sole edge. The trimmed string in leather sole work readily falls away fromithe sole, but thetrimmed string in rubber sole work tends to remain in place on the beveled edge of the sole and generally must be removedby the operator. The machineoperates at such .a high'speed that the operators are frequentlycut on't'he fingers when. attempting to "pick up the string, because their hands, inadvertently, will be caughtby the knife as it swings aroundfthesole. j I I One object of the present inventionis to provide afsafety device, for machines of the character indicated, which will prevent in- 1 jury to the operato'rs hands by cuts from the trimming knife. In accordance with this object a feature of the invention'comprises a guard for the trimming knife so arrangedthat it will prevent the operator from picking upthe beveled string fr'om in front of the rounding knife, and will a'lso prevent the knife from cutting the operators fingers when coming from behind.

This and other objects of the invention will be understood from the following de 'scription' of the features and combinations of parts through which said objects are attained, the novel features of Said constructions beingparticularly pointed out in the appended claims. A

The preferred form of the improvements, as applied to a sole rounding machine of the type described in said Allen and Mayo patent-s, is shown in the accompanying drawings, in which; Figure 1 is a plan view of a Planet sole rounder just starting a trimming cut, taken on a plane throughthe clamp supports, and having the present improvements incorporated therein; Fig. 2 is a detail; in plan, of the improved knife arm in cutting position against'the pattern; Fig. 8' is a similar detail showing the angular posi: tion of the knife holder at the completion of a rounding operation; Fig. 4 is a'detail of the rounding knife; and Fig. 5 is an ele- "va'tion of the pattern, clamp, and knife holder at the commencement of the round-' ingoperation.

' The general mode of operation of the illustrated machine is identical with that'of the Planet sole rounder fully described in said prior patents. The machine also includes mechanism for nnparting an excess of travel,

or overrun, to the knife beyond its starting I point which is the same as described in the present inventors prior Patent No. 540,062, dated May 28, 1895. As in the machine of said prior patents, the pattern 6 is sup:

ported on two posts rising from theusual cam plate 8 sustained and a sole'S is clamped on the pattern by a bevel edgedclamping plate 12, sustained on two supports depending from a clamp car-- "rier held in the usual overhanging portion of I the frame (not shown).

frag soles is bent at an angle to itsshank and to the plane of the pattern, as shown in Fig. 4-, is secured to a holder 16 pivotally mounted on a pin 18 (Fig. 5) of an arm 20 rigidly secured to a segmental shaped plate 22, pivotally mounted at 24 in on a rotary table 10;

V The rounding "knife 14, WlllCll for rounding rubber or in the end v a carrier .26 (Fig; 1).. The carrier 26 is mounted to Slide inwardly and outwardly on a'g de 28 on the table 10; A hand-lever '1 80 tensions a spring within a drum 32 to withdraw the knife arm 20 from the pattern 6. The trimming cut is made by transfen ring the knife 11 around the pattern through 5 rotation of the table 10, the cam plate 8, sliding carrier 26 and spring within the drum 32 combining in their action to maintain the knife holder 16 in proper cutting position. All of the parts just described are of the same construction and have the same mode of operation as in the machine described in said prior patents, a one-revolution clutch being thrown in by the operator for each new sole clamped on the pattern. In the embodiment of the invention illustrated in the drawings the knife arm carries a hollow post 31 (Fig. 5), the bore of which receives a pivot pin 36 depending from the rear end of a guard plate 38 ex- 2 tending forwardly along the arm in a plane above the knife 14:. The pin 36 has a flattened surface which is engaged, when the knife is in working position, as in Fig. 2, by a spring pressed latching bolte0 housed in a hollow lug 12 projecting laterally from the post As shown in Figs. 1 and 2, the guard plate 38 completely covers the knife 11 and, since it is held in such position by the latch bolt 10, prevents the operators fingers from being caught and cut by the knife, should he inadvertently bring his hand down on, or in advance of, the knife in attempting to pick up the beveled string being trimmed from the sole.

As best shown in Fig. 2, the forward end of the guard plate 38 projects over the beveled edge of the sole clamping plate 14: and it must be withdrawn from such position before the clamp can be raised to release the sole. The return 'movement of the knife after the usual period of overrun, is utilized to effect the operation. The pivoted knife holder has projecting outwardly from its lower end a crank arm eliwhich carries a depending lug, preferably a roll 4:6. On the upper face of the cam plate 8 is a stop in the form of a leaf spring held to the plate by screws at its rear end (Fig. 1) and having an upwardlyrising, yielding forward end 48 (Fig. 5) located in both the path and plane of travel of the'roll ei6. On the forward movement of the knife 11 the spring 18 yields downwardly as the roll 18 travels over it, but on the backward move ment of the knife, after the overrun, the roll engages the forward end of the spring and, as the knife continues to move backward, slides outwardly along it, turning the knife holder 16 about its pivot 18 on the knife arm 20. The guard plate 38 is provided with a depending tab 50 (Fig. 5) at the heel of the knife, which is engaged by the knife as it turns with its holder. The pressure of the knife on the tab 50. overcomes the force of'the spring which urges the latch bolt 41:0 forward, causing the guard plate to be carried outwardly with the knife to a position outside ofthe. edge of the sole clamp 12, as shown inI ig. 3.,

In addition to swinging the guard plate away from the sole clamp the roll 46 and spring 8 also perform the function of setting the knife 14: at a proper angle for cutting diagonally into the sole margin on starting the cut on a new sole, all as described and claimed in the patent to E. L. Hurd, No. 1,109,812, dated September 8,1291%, which illustrates a different construction.

The guard plate 38 may, at any time, be turned back from above the knife 1 1 when it is desired to adjust or replace the knife, for outward pressure on the guard will cause the flat face on its pivot pin 36 to press back the latch bolt 10 and permit free turning movement on the pivot. The beveled string removed by theangularly bent knife 14 is shown at T in Figs. 4: and 5. v

The nature and scope of the invention having been indicated and the preferred form of the invention having been specifi cally described, what is laimed as new is 1. In a sole trimming machine, the combination with a pattern and means for clamping a sole thereoina knife arm having a knife mounted thereon, and means for transferrin the point of operation of the knife around the pattern, of a guard plate sustained on the knife arm and extending over the knife.

2. In a sole trimming machine, the combination with means for clamping a sole, and a knife having a blade positioned to trim a string from the margin of a sole in the clamp, of a guard plate lying above the knife and having a tab depending adjacent the heel of the knife.

3. In a sole trimmingmachine, the combination with means for clamping a sole, a knife support having a knife for trimming astring from the margin of the sole in the clamp, and a guardplate pivotally mounted on the support and yieldingly held in position above the knife.

4. In a sole trimming machine of the type in which the sole is clamped on a pattern and the point of operation of the knife is transferred around the pattern with an overrun and return therefrom at the completion of the trimming cut, the combination with said knife of a pivotally mounted guard plate above the knife, and means controlled by .the. return from the overrun for swinging the uard plate away from the pattern.

5. In a sole trimming machine, the combination with a sole pattern,- a. knife arm, and a, swinging knife holder thereon carrying a knife, of a guard plate movably mounted on the arm, and means on the guard plate adapted to be engaged by the knife when its holder swings away from the pattern and cause the guard plate to move with the holder.

6. In a sole trimming machine of the type in which a knife is guided by a pattern and is caused to traverse the outline of the pattern, overrun and return to its starting point, the combination with a pivoted knife holder having a crank arm provided with a depending lug, and a stop arranged in the path of movement of said lug adapted to yield on the forward movement of the knife thereover and be engaged by the lug on the return of the knife from the overrun, whereby the knife holder is turned on its pivot to a position with the knife blade at an angle to the outline of the pattern.

7 In a sole trimming machine, the comclamping a sole thereon, a knife arm having a knife holder pivoted thereon and de-' pending below the pattern, and means for causing the knife to traverse the outline of the pattern, of a crank arm on said holder by which the knife may be turned to a position with its blade at an angle to the outline of the pattern, and a leaf spring supported in the path of travel of the crank arm on the knife holder, the end of which yields as the crank arm passes over it in one direction of travel of the knife and acts as a stop, to turn the knife holder, in the opposite direction of travel.

GIDEON JULIAN.

co 0! thin patent may be obtained for five cents each, by addressing the Commissioner of 1 mm,

, Washington, D. 0. p 

